Fastening-inserting machine



Jan. 16, 1934. GQDDU FASTENING INSERTING MACHINE 2 Sheets-Sheet l FiledOct. 8, 1931 F i gl.

Jan. 16, 1934. G, GODDU 1,943,429

FASTENING INSERTING MACHINE Filed Oct. 8. 1951 2 Sheets-Sheet 2 PatentedJan. 16, 1934il UNITED STATES PATENT OFFICE FASTEN IN G-IN SERTINGMACHINE Appiication October 8, 1931.

Claims.

This invention relates to fastening-inserting machines and isillustrated herein as embodied in a machine of the type disclosed inUnited States Letters Patent No. 1,849,253, granted March 15,

5 1932, upon an application nled in the name of Fred N. Lachapelle.

Machines of the type disclosed in Patent No. 1,849,253 referred to aboveare provided with an awl arranged to form fastening-receiving holes l@in a work piece presented thereto, and to feed the work to bring eachfastening-receiving hole formed therein, into fastening receivingposition. In such machines the awl is yieldingly connected to itsoperating means by mechanism which permits the awl to come to rest whenit encounters an excessive resistance in its workpenetrating movement aswhen it strikes an impenetrable member back of the Work while the meansfor operating the awl continues its operation. A work support is usuallyprovided arranged to press the Work, with considerable force, against apresser plate or work abutment during the work-penetrating andfasteninginserting operations and means is also usually provided forrelieving the pressure of the work support during the feeding movementof the work.

In the use of the machine of the application referred to above, nodiiiculty has been experienced in performing the heel-seat nailing orpegging operation while the shoe is upon the last, In the manufacture ofcertain kinds of shoes, however, the last is removed from the shoebefore the outsole is attached to the shank and forepart of the shoe. Insuch cases the heel-seat nailing or pegging operation is commonlyperformed with the last removed from the shoe.

In performing the heel-seat nailing or peggmg operation cif the last, ithas been found that, due o to the yielding connection between the awland its operating means, there is a tendency for the awl to follow thework support as the Work support is lowered to relieve pressure on thework and to drag across the upper surface of the work support as the awlis moved transversely of the machine to feed the work. This sets upconsiderable friction between the end of the awl and the upper surfaceof the work support which interferes with the feeding movement of theawl and as a result sometimes the fastening-receiving holes formed inthe work by the awl are not moved into alignment with thefastening-inserting instrumentalities of the machine.

It is an object of the present invention to provide afastening-inserting machine so organized Serial No. 567,658

that the above-mentioned diiiculty will be obviated when performingoff-the-last work. In the illustrated machine and according to animportant feature of the invention, means is provided for imparting apositive movement of retraction to the awl immediately after the awl hascompleted its work-penetrating movement and prior to its work-feedingmovement. Thus, the awl is prevented from dragging across the uppersurface of the work support as it is moved transversely of the machineto bring each fasteningreceiving hole formed in the work into alignmentwith the fastening-inserting instrumentalities of the machine.Preferably and as illustrated, the means for withdrawing the awl fromthe work is constructed and arranged to impart a movement of retractionto the awl the length of which is less than the thickness of the work asmeasured by the awl during its work-penetrating movement so that the awlis only partially withdrawn from the work regardless of the thickness ofthe work.

With the above and other objects and features in view, the inventionwill now be described in connection With the accompanying drawings andwill be pointed out in the claims.

In the drawings,

Fig. 1 is a side elevation of the head of a fastening-inserting machineembodying the present invention and showing a cross-section of a shoemounted upon a work support and presented to the machine as for theperformance of a heelseat nailing or pegging operation;

Fig. 2 is a front elevation of the head of the machine shown in Fig. l;

Fig. 3 is a side elevation looking in the opposite direction of the headof the machine shown in Fig. 1;

Fig. 4 is a perspective view of means for severing a fastening from astrip of fastening material and presenting the fastening to theoperation of a fastening-inserting driver;

Fig. 5 is a side elevation of the awl-operating means and illustratesthe position of the parts after the awl has been partially withdrawnfrom the work; and

Fig. 6 is a side view on an enlarged scale of parts shown in Fig. 5showing the position of the awl relatively to the Work support justprior to the feeding movement of the awl.

The illustrated machine is of the general type disclosed in UnitedStates Letters Patent No. 1,030,775, granted June 25, 1912, upon anapplication filed in the name of George Goddu, though organized toinsert fiber pegs severed from a strip of fastening material such aspaper twine instead of loose nails. r1he machine may be advantageouslyequipped with a work support of the character disclosed in said PatentNo. 1,030,775, the pressure-relieving mechanism being modified, ifdesired, as shown in Figs. 23 and 24 of United States Letters Patent No.1,686,808, granted October 9, 1928, upon an application led in the namesof George Goddu and T L. MacKenzie. Reference may be had to thesepatents for a full disclosure of such parts of the machine as it isunnecessary to illustrate herein. The illustrated machine is providedwith a column carrying a head 12 on which are mounted thefasteninginserting instrumentalities of the machine. The column 10 alsocarries a work support 14 arranged to support a work piece such as ashoe 16 with its sole 20 in engagement with a presser plate 22 carriedby the head 12 of the machine. The shoe may be positioned relatively tothe fasteninginserting instrumentalities of the machine by a gage 24which may take any suitable form also carried by the head 12 of themachine. Mounted in suitable bearings, carried by the head 12 of themachine is a cam shaft 30, Figs. 1 and 3, carrying a cam member 32provided with a series of cam grooves and surfaces arranged to operatethe moving parts of the machine. Loose upon the cam shaft near the rearend thereof, is a pulley 34 driven from any suitable source of power bybelt 36. Slidably mounted on the shaft 30 is a clutch member 38 having aclutch surface 40 arranged for movement into and out of driving relationwith a clutch surface 42 formed on the pulley 34. The clutch member 38is also provided with a brake surface 44 arranged for movement into andout of braking relation with a brake surface 45 carried by the head 12of the machine. A spring surrounding the shaft 30 tends to move theclutch member 38 into driving relation with the pulley 34 and permitsthe clutch member 38 to be moved away from the pulley 34 and intoengagement with the brake surface 46 by power transmitted from a camsurface 52 with which the cani member 32 is provided when the treadlerod 54 is depressed by a spring 55 upon the releasing of a treadleconnected to the lower end of the rod 54. For a more complete disclosureof this mechanism which forms no part of the present invention,reference may be had to Patent No. 1,030,775 referred to above. Themachine is provided with a driver bar mounted for reciprocating movementin vertical ways carried by the head 12 of the machine adjacent to theforward end of the shaft 30. Clamped to the lower end of the driver bar60 is a driver 62. The driver bar 60 is provided with a rack 64 meshingwith a gear segment 66 formed upon the end of the forwardly extendingarm of a bell-crank lever 68 fulcrumed at 70 to the head 12 of themachine and having a depending arrn carrying a roll positioned in thecam track 72 formed in the member 32.

An awl-bar carrier 80, best shown in Fig. 2, is mounted for horizontalsliding movement at the front of the machine, and mounted for verticalsliding movement in ways formed in the awl-bar carrier is an awl bar 82carrying at its lower end an awl 84. The rear surface of the awl bar 82is provided with a rack 86 meshing with a gear segment 88 formed uponthe forward end of a lever 90 fulcnumed at 92 to the head l2 of themachine 3. The awl-bar carrier 80 is reciprocated transversely of themachine by a lever fulcrumed to the head 12 of the machine and carryinga roll positioned in a cam groove formed in the rear surface of a camdisk 102 secured to the forward end of the shaft 30.

The lever 90 is provided with a rearwardly extending arm 104 yieldinglyand adjustably connected to a bell-crank lever 106 pivoted at 108 to thehead 12 of the machine and carrying a cam roll positioned in a cam track110 formed in the cam member 32, Figs. 3 and 5. Thus the `awl 84 servesboth to form fastening-receiving holes in a work piece presented theretoand to feed the work piece toward and past `the driver 62. In order topermit the awl 84 to come to rest when it hits the metal horn tip of thework support 14 the connection between the arm 104 of the lever 90 andthe bell-crank lever 106 includes a spring 112 stiff enough to transmitsufoient power `to the awl 84 to drive the awl into and through thematerial of a shoe bottom without substantial yielding but sufficientlyyielding so that it is compressed and permits the awl to come to restwhen it strikes the metal horn tip of the work support 14 even thoughthe lever 106 has not finished its rocking movement. The spring 112surrounds a sleeve 114 pivoted at its lower end to the arm 104 of thelever 90 and carrying at its upper end a nut 116 which serves as anabutment for the upper end of tho spring 112. The lower end of thespring 112 abuts against a colla-r 118 slidably mounted on the sleeve114 and carried at the lower end of a pair of parallel bars 120pivotally connected at their upper ends to a stud 122 adjus-tabiymounted in a slideway 124 formed in the forwardly extending arm of thebell-crank lever 106. rihe lever 106 may be provided with a scale 126,Fig. 3, to indicafte the depth of the fastening-receiving holes formedin the-work by the full stroke of the awl at the various positions ofadjustment of the stud 122. Clamped to the nut 116, is a bearing member128 engaging machined surfaces 130 formed upon the parallel bars 120 andserving to prevent relative displacement of the members 114 and 120.

The ber-fastening material 140, from which the pegs inserted by themachine are severed, is carried by a reel 142 mounted upon a bracket 144secured to the head 12 of the machine. The fastening material is engagedby a feed dog 146, Fig. 2, and by a spring-pressed-holding dog 148designed to prevent retrograde movement of the fastening material afterwhich it enters a passageway 150, the lower end of which is in alignmentwith the driver passage of a forwardly and rearwardly reciprocatingthroat member 152 when the throat member is in its rearmost position.Forward movement of the throat l member 152 thus serves to sever a pegfrom the fastening material 140. The throat member 152 is carried by theforward end of a bar 154, Fig. 1, mounted for forward and rearwardmovement in ways carried by the head 12 of the 1,1.:

machine and provided near its rear end with a rack 156 engaging a gearsegment 158 formed at the lower end of a lever 160 fulcrumed at 162 tothe head 12 of the machine and having an upwardly extending arm carryinga roll positioned in a cam groove 164 formed in the cam member 32.

The feed dog 146, Fig. 2, is pivoted to the ends of a pair of parallellinks 166 pivoted at 168 to a pair of ears depending from a block 170formed at the lower end of a tubular member 172 which forms a guide forthe fastening material 140 and is mounted for reciprocating movementlengthwise of the strip of fastening material 140 in a slideway formedin a bracket 174 secured to the head 12 of the machine. The extent ofthe reciprocation of the block 170 will determine the length offastening material fed.

Accordingly, the block 170 is pivoted to a block 176 mounted inslideways formed at the forward end of a level' 178, Fig. 1, pivoted at180 to the head 12 of the machine and having a rearwardly and upwardlyextending arm pivoted at 182 to the forward end of a link 184 the rearend of which is pivotally connected to a bolt 186 adjustably mounted inan arcuate slot 188 formed in the upwardly extending arm 190 of abell-crank lever 192 pivoted at 193 to the head 12 of the machine. Thearm 190 of the bell-crank lever 192 is provided with a roll positionedin a cam track 194 formed in the cam member 32. A nut 198 is threadedupon the outer end of the bolt 186 and engages a washer 200 bearingagainst the outer surface of the rear end of the link 184. Thus the stud186 is adjustably secured to the bell-crank lever 192.

The radius of curvature of the slot 188 is equal to the length of thelink 184 and since the rocking movement of the lever 192 is uniform ineach cycle of operation of the machine, the extent of rocking movementimparted to the lever 178 may be varied by adjusting the position of thestud 186 relatively to the pivot 193 of the lever 192. Thus the extentof the reciprocation of the block 170 may be varied by adjustment of theconnection of link 184 to the arm 190 of the bell-crank lever 192. Asillustrated, the lever 192 is effective also to transmit thepressure-relieving movement to the work support 14 which facilitates thefeeding of the work, that movement being transmitted through a rod 196connected at its upper end to a rearwardly extending arm 195 of thelever 192 and at its lower end to mechanism of the character disclosedin Letters Patent of the United States No. 1,587,848 modified, ifdesired,

4.0.! as shown in Figs. 23 and 24 of Letters Patent of the United StatesNo. 1,686,808.

In order to prevent the awl from dragging across the end of the horn asthe awl is moved transversely of the machine with its carrier s to moveeach fastening-receiving hole formed in the work into alignment with thedriver 62, means is provided, which will now be described, for partiallywithdrawing the awl from the work prior to the feeding movement thereof.

As illustrated in Fig. 3 the awl 84 is yieldingly connected to itsreciprocating means through a stiiic compression spring 112, which isarranged to yield to permit the awl to come to rest when it encountersan excessive resistance in its workpenetrating movement as when itstrikes the metal horn tip of the work support 14. Since the full strokeof the awl 84 may be varied in accordance with the thickness of the workto be operated upon by adjusting the position, in the slot 124,

. of the bolt 122 relatively to the pivot 108 of the lever 106 it willbe readily seen that the spring 112 may be given a substantially uniformmovement of compression in each cycle of operation of the machine afterthe awl 84 strikes the metal horn tip of the work support 14 regardlessof the lmovement in a counterclockwise direction as -viewed in Figs. 8and 5 is imparted to the bellcrank lever 106. This movement of the lever106 in a counterclockwise direction rst returns the spring 112 to itsinitial position at which time the collar 118 engages a ange 202 formedon the sleeve 114, after which, during continued counterclockwisemovement of the lever 106, the lever is swung in a clockwise directionthereby elevating the awl bar 82 and partially withdrawing the awl fromthe work, Fig. 6.- The awl 84 is then moved transversely of the machineto bring the fastening-receiving hole formed in the work intofastening-receiving position after which the lever 106 is returned toits initial position thereby withdrawing the awl from the work.

Having described the invention what I claim as new and desire to secureby Letters Patent of the United States is:

1. A machine for inserting fastenings having, in combination, an awlarranged for work penetrating and work feeding movements, means foroperating the awl including a connection arranged to yield when the awlstrikes an excessive resistance, and means for imparting to the awl 'apositive movement of retraction between its work penetrating and feedingmovements.

2. A machine for inserting fastenings having, in combination, an awlarranged for work penetrating and work feeding movements, means forrecpirocating the awl including a spring connection arranged to bepartially compressed whenthe awl penetrates the work, and means forpartially withdrawing the awl from the work between its work penetratingand feeding movements.

3. A machine for inserting fastenings having, in combination, a worksupport, an awl, means for causing the awl to penetrate the bottom of ashoe mounted on the work support and then to come to rest when the awlstrikes the work support, said means being constructed and arranged toimpart a movement of retraction to the awl the length of which is lessthan the thickness of the work asmeasured by the awl during its workpenetrating movement, connections between said awl operating means andsaid awl arranged to yield when the awl strikes the work support, andmeans for moving the awl transversely of the work support to bring thehole formed in the work into fastening-receiving position.

4. A fastening-inserting machine having an awl, means for operating theawl to form fastening-receiving holes in a work piece presented theretoand to feed the work piece to bring the hole formed therein intofastening-inserting position, said means being constructed and arrangedpartially to withdraw the awl from the work between its work penetratingand feeding movements and including a yieldable connection between theawl and operating means, and means for inserting fastenings into theholes formed in s the work by the awl.

5. A fastening-inserting machine having an awl, means for operating theawl to form fastening-receiving holes in a work piece presented theretoand to feed the work piece to bring the fastening-receiving hole formedtherein into fastening-inserting position, said means including aconnection arranged to yield when the awl penetrates the work and beingconstructed and arranged to impart a positive movement of retraction tothe awl after the yieldable connection has been returned to normalcondition between its work penetrating and feeding movements the lengthof which is less than the entire thickness of the work piece, and meansfor inserting fastenings in the holes formed in the Work by the aWl.

6. A fastening-inserting machine having an awl, means for operating theawl to form fastening-receiving holes in a Work piece presented theretoand to feed the Work piece to bring the hole formed therein intofastening-receiving position, said means including a spring connectionarranged to yield When the awl strikes an excessive resistance and beingconstructed and arranged to impart a positive movement of retraction tothe awl just prior to the Work-feeding movement of the awl the length ofsaid movement of retraction being less than the length of theWork-penetrating' movement of the aWl, and means for insertingfastenings in the holes formed in the work by the awl.

7. A machine for inserting fastenings having, in combination, an awl,means to cause the awl to pierce partially to be Withdrawn and then tofeed the Work piece in each cycle of operation of the machine, a singlemeans for severing a fastening from a strip of fastening material andfor feeding the fastening into alignment with the hole formed the work,and means for inserting the aligned fastening into the Work.

8. A fastening-inserting machine having, in combination,fastening-inserting means, an awl, means for moving the awi in onedirection through a path the length of which is controlled by thethickness of the Work piece presented thereto and in the oppcsitedirection through a path the length of which is less than the thicknessof the Work piece, and means for thereafter moving the awl transverselyof the machine to feed the Work.

9. A fastening-inserting machine having, in combination,fastening-inserting means, an awl, a cam, connections between the aWland the cam constructed and arranged forcibly to thrust the awl throughthe material of a Work piece presented thereto but to permit the awl tocome to rest in each cycle of operation when it strikes an impenetrablemember back of the Work piece and later in the cycle partially towithdraw the awl from the work, and means for thereafter moving the awltransversely of the machine to feed the Work.

10. A fastening-inserting machine having, in combination,fastening-inserting instrumentalities, an awl, a presser plate, awork-support movable toward and from the presser plate and arranged topress the Work against the presser plate during the Work-penetratingmovement of the awl and during the fastening-inserting operation, meansfor reciprocating the awl constructed and arranged to move the awltoward the Work support to form fastening-receiving holes in a workpiece supported thereby and to come to rest in engagement with the worksupport and then to move the awl away from said Work support an amountless than the thickness of the Work piece, and means thereafter formoving the awl transversely of the machine to bring thefasteningreceiving hole formed in the Work into fasteningreceivingposition.

GEORGE GODDU.

